. suspected bostonbomberdzhokhartsarnaevwascharged today with a weapon -- using a weapon of mass destruction and malicious destruction of property resulting in death following three deaths and 180 injured in last week's marathon attack. the criminal complaint includes the description of footage of him leaving a knapsack on the ground where the explosion took place. another similar bomb was found at the site of the watertown shootout. tsarnaev remains in a boston hospital tonight unable to speak because of injuries that include a gunshot wound to his neck. but he's being questioned by authorities already and responding with written answers. in medford, massachusetts, today a funeral was held for 29-year-old victim krystle campbell. in boston, deval patrick and mayor menino requested a moment of silence at 2:50 to mark the one-week anniversary of the bombing. great public servants up there. we begin with those new charges filed against dzhokhar tsarnaev. pete william is nbc's chief justice correspondent. pete, we have charges. >> we do. couple things about the charges. both of the

of the runners wore black ribbons on their vests in tribute.>>>dzhokhartsarnaevisin serious but stable condition. he has a gunshot wound to his neck. so far he has been unable to speak to authorities but is reportedly responding sporadically and writing to questions. police captured tsarnaev in a dramatic fashion on friday night in a boat in a backyard in watertown, massachusetts. federal prosecutors could file criminal charges against him as early as today. they are questioning tsarnaev under a public safety exemption which means he doesn't have the right to remain silent because they believe there is an imminent threat to the public. however, when exemption expires there are some members of congress republican members of congress calling on authorities to declare him an enemy combatant and hold him for 30 days in order to continue to interrogate him. we're back with more show after the break. stay with us. (vo) earth day isn't just for tree huggers, it's a wake up call to mankind. celebrate earth day with an afternoon of documentaries about the planet we all share. >> what are the fo

.dzhokhartsarnaevhasbeen charged with using a weapon of mass destruction. he was read his miranda rights from his hospital and he will have access to a lawyer. the 19-year-old has been described as cooperative during questioning. forced to write his answers or nod yes or no. he told officials he and his brother came up with the idea for the attacks on their own, finding internet resources to learn how to make bombs. he has been assigned three public defenders and could very well face the death penalty. a weekend search of dzhokhar's college dorm room turned up a black jacket, a white hat and similar to the one in the surveillance photos he was allegedly wearing. investigators also want to question tamerlan tsarnaev's wife. the couple initially met at a nightclub. she later converted to islam, dropped out of college and had a child with him. her attorney has said that she had no suspicions that her husband might be plotting an attack. hundreds of people stood in silence at copley square at 2:50 p.m. one week after the bombings. president obama marked the moment of silence from the white h